CVE-2023-3439
Linux Kernel MCTP Denial of Service Use After Free Vulnerability
Description
A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device's relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev->addrs object, potentially leading to a denial of service.
INFO
Published Date :
June 28, 2023, 9:15 p.m.
Last Modified :
June 25, 2025, 8:53 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- There is no known solution at this time.
Public PoC/Exploit Available at Github
CVE-2023-3439 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-3439.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2023/07/02/1 | Mailing List Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2217915 | Issue Tracking Patch Third Party Advisory |
| https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 | Patch |
| http://www.openwall.com/lists/oss-security/2023/07/02/1 | Mailing List Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2217915 | Issue Tracking Patch Third Party Advisory |
| https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 | Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-3439 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-3439
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
C Python
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-3439 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-3439 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Jun. 25, 2025
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.18 OR *cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (including) 5.17 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 10, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/07/02/1 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2217915 Added Reference https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 06, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2023/07/02/1 No Types Assigned http://www.openwall.com/lists/oss-security/2023/07/02/1 Mailing List, Patch, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2217915 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2217915 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 No Types Assigned https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 Patch Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.18 *cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 02, 2023
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/07/02/1 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 4.7
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.01 }} 0.00%
score
0.00483
percentile